No problem, we've got 7863 and 2569 to multiply
7863 × 2569 = 2569 × (7863)
+ 2569 × 3 which equals 7707
+ 2569 × 60 giving us 154140
+ 2569 × 800 what gives us 2055200
+ 2569 × 7000 giving us 17983000

= 20200047
